Crank-shaft.



Patented Apr. 20, 1915.

CRANK SHAFT.

APPLICATION FILED IAN. 2a. 1914.

F. W. SPACKE, D. T. BROWNLEE L W. SPACKE.

UMTED srnrns 'PATENT OFFICE.

FRED W. SPACKE, DALMAR T. .BROWNLEE AND WILLIAM SPACKE, OF INDIANAPOLIS,

INDIANA, ASSIGNORS T0 THE F. W. SPACKE MACHINE COMPANY, OF INDIANAPOLIS,

INDIANA, .A CORPORATION OF INDIANA.

CRANK-SHAFT.

Specification of Lette-rs Patent.

Patented Apr. 20, 1915.

Original application led January 13, 1913, Serial No. 741,719. Divided and this application filed January To all whomy it may concern Be it .known that we, FRED W. SPACKE, DALMAR T. BRowNLEE, and Y WILLIAM SPACKE, all citizens of the -United States, re-

siding at Indianapolis, in the county of.

Marion and State of India-na, have invented a new and useful Crank-Shaft, of which the following is aspecication.

how it serves as a nut lock.

The cylinder 10 is set on top of the crank case 12,. shown as having a removable end cover 13. The crank case 12 and its cover 13 carry ball bearings 15 and 16, in which is mounted the crank shaft embodying our invention.

This crank shaft has two stub shaft portions 17 and 18, provided at their respective adjacent ends with spaced disks 19 and 20 having eccentric projections 21 and 22 on their adjacent faces. These Vprojections are cylindrical exteriorly and together form a support for a roller bearing 23 on which isV mounted the crank end of a pitman 24', the other end of which is connected to a piston 25 in the cylinder 10. The projections 21 and 22 are bored out so that they are tapered interiorly, the large ends being toward each other'or at the adjacent ends of the projec tions. Within the projections is mounted a doubly tapered bolt 26, screw-threaded at both ends to receive nuts 27 whereby the 28, 1914. Serial No. 815,081.

projections 21 and 22 may be clamped together on the bolt 26 and the disks 19 and 2O and their stub shafts 17 and 18 all will be held in proper relative positions. Suitably mounted on the disks 19 and 20 are two iiywheel disks 29, which are held against rotation by dowel disks 29 and are provided with suitably notched perforations 30 which iit loosely over the nuts 27 and act as nutlocks therefor. On the end of the crank shaft may be mounted a suitable pulley 40, or other power-transmitting device. The fly wheel disks 29 are heaviest opposite the projections 21 and 22, to provide proper balancing.

We claim as our invention:

1. A 4crank shaft comprising two alined stub shafts provided with disks at their adjacent ends, the adjacent faces of said disks having alined eccentric projections substantially parallel to the shaft axis, said projections being bored out taperingly with the large end in each projection toward the other projection, and a double ended doubly tapered bolt fitting in the bores of the projections and provided with nuts whereby the two parts of the shaft may be clamped together?. j j

2. A crank s aft comprising two alined stub shafts provided with disks at their adjacent ends, the adjacent faces of said disks having alined eccentric projections substantially parallel to the shafty axis, said projections being. bored out and the bore in each projection being larger at the end toward the other projection than at the end remote therefrom, and a double ended bolt larger at the middle than at the ends and fitting in the bores of the projections and provided with nuts whereby the two parts of the shaft may be clamped together.

3. A crank shaft comprising two alined stub shafts provided with disks at their adjacent ends, the adjacent faces ofsaid disks having alined eccentric projections substantially parallel to the shaft axis, said projections Qv v v 1,136,376

being bored out, a double ended bolt fitting twenty-sixth day ofv January, A. D. one 1@ in the bores of the projections and provided thousand nine hundred and fourteen.

With nuts Whereb the two arts of the shaft may be olampedytogether? and fly Wheels mounted on said disks and provided with WILLIAM SIPACKE holes tting over said nuts to lock them against rotation. Witnesses:

1n witness whereof, We have hereunto set F. S. LAWRIE,

our hands at Indianapolis, Indiana, this H. O. PERINE. 

